WO2005098311A2 - Panneau lumineux eclaire par des diodes electroluminescentes - Google Patents

Panneau lumineux eclaire par des diodes electroluminescentes Download PDF

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Publication number
WO2005098311A2
WO2005098311A2 PCT/US2005/010361 US2005010361W WO2005098311A2 WO 2005098311 A2 WO2005098311 A2 WO 2005098311A2 US 2005010361 W US2005010361 W US 2005010361W WO 2005098311 A2 WO2005098311 A2 WO 2005098311A2
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WO
WIPO (PCT)
Prior art keywords
light
panel
emitting diodes
light emitting
leds
Prior art date
Application number
PCT/US2005/010361
Other languages
English (en)
Other versions
WO2005098311A3 (fr
Inventor
Craig J. Schexnaider
Original Assignee
Schexnaider Craig J
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schexnaider Craig J filed Critical Schexnaider Craig J
Publication of WO2005098311A2 publication Critical patent/WO2005098311A2/fr
Publication of WO2005098311A3 publication Critical patent/WO2005098311A3/fr

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/002—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
    • G02B6/0021—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces for housing at least a part of the light source, e.g. by forming holes or recesses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S10/00—Lighting devices or systems producing a varying lighting effect
    • F21S10/02—Lighting devices or systems producing a varying lighting effect changing colors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S9/00—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply
    • F21S9/02—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator
    • F21S9/022—Emergency lighting devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
    • F21V23/0435—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by remote control means
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0055—Reflecting element, sheet or layer
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/20—Controlling the colour of the light
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/175—Controlling the light source by remote control
    • H05B47/19—Controlling the light source by remote control via wireless transmission
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V2200/00—Use of light guides, e.g. fibre optic devices, in lighting devices or systems
    • F21V2200/20—Use of light guides, e.g. fibre optic devices, in lighting devices or systems of light guides of a generally planar shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V2200/00—Use of light guides, e.g. fibre optic devices, in lighting devices or systems
    • F21V2200/30—Use of light guides, e.g. fibre optic devices, in lighting devices or systems of light guides doped with fluorescent agents
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2105/00—Planar light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
    • G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Definitions

  • LED signs typically include a panel surface having graphics applied thereto or etched to define indicia and generally light is direct light from the light source onto either the viewing surface of the panel or through a translucent panel disposed behind the graphic information to be viewed.
  • Edge lighting systems use a light source to inject light into the edge of a transparent or translucent panel, whereby the panel is caused to glow and any graphics in contact with the panel are made apparent. For example, a message painted on the back side of a panel viewed from the front can be illuminated in this manner, or a panel can be caused to glow generally, the indicia being defined by or between opaque areas on the front side.
  • LEDs Light emitting diodes
  • LEDs Light emitting diodes
  • Pulles, U.S. Patent 3,892,959 discloses an edge-lighted panel having a number of light sources couple to a length of flexible wiring which is arranged to be removably affixed about the peripheral edge of the panel, with the light sources disposed within light receiving cavities in the marginal portion of the panel.
  • Patent 5,027,258 discloses an illuminated display unit such as a board with a house number thereon or an advertising billboard, having a light guide panel. At least one electrical illuminating element is arranged in the vicinity of at least one lateral limiting edge thereof.
  • the light guide panel serves for illuminating logo symbols, which are preferably in the form of film or of vapor coated layers, on the light guide panel.
  • At least one of the lateral limiting edges of the light guide panel is provided with a light guide batten whose thickness is in excess of the thickness of the light guide panel and at least one of the illuminating elements is mounted in the batten.
  • the transition between the light guide batten and the light guide panel is designed so as to have a high optical conductivity or transitivity.
  • the external surfaces of the light guide batten are provided at least partly with an inwardly reflecting layer.
  • Hegarty, U.S. Patent 5,276,591 discloses an illuminated sign system using high brightness LEDs and a translucent graphic panel with suitable opacity for the transmission of light.
  • the graphic panel is illuminated by light from the LEDs which is injected into the edge of the graphic panel causing graphics applied to a surface of the graphic panel to become illuminated.
  • Patent 5,375,043 discloses a lighting unit of an indirect type, capable of varying the luminance and color of illumination with respect to a target to be lit, and further capable of using itself as a display unit.
  • the lighting unit comprises a light guide plate having one side fashioned into an uneven surface or a reflective surface; a plurality of light emitting diodes for supplying a light to the light guide plate, the light derived from the diodes being dispersed through the light guide plate; and a control section which controls actions including blinking of the light emitting diodes. At least a part of the diodes is intended to emit a light different in color from that of the others so that the color or blinking of illumination can be arbitrarily varied through the control by means of the control section.
  • U.S. Patent 5,641,219 discloses an illuminating device in which light is introduced mainly from a light source provided at a peripheral portion of a light emitting surface thereby illuminating the light emitting surface.
  • the illumination of the light emitting surface is kept uniform irrespective of a shape of the light emitting surface, a type of the light source, a number of light sources and a mounting position of the light sources.
  • the device may be used as a display device.
  • Tung, U.S. Patent 5,842,297 discloses a luminant sign having a base including a pair of opposed casings and a image plate made of transparent acrylic resin engaged with the base.
  • the base has a circuit board with a plurality of illuminators disposed therein.
  • a front face and a rear face of the image plate have a number of display areas defined thereon by peripheral grooves of pictures or words.
  • Each display area has a plurality of reflective surfaces formed therein in directions non-parallel to the beam directions of the illuminators whereby each display area of the image plate will achieve a uniform intensity.
  • Maas et al, U.S. Patent 6,539,656 discloses a luminaire and light emitting panel comprising a relatively thin and flat light-emitting panel having a light-emitting window and, opposite the light-emitting window, a rear wall with opposed edge surfaces. At least one of the edge surfaces is light transmitting and associated with a plurality of light sources. Light originating from the light sources is spread in the panel.
  • the device is characterized in that a plurality of deformities is provided in the panel for extracting light from the panel via the light emission window.
  • the deformities are clustered so as to form at least one light symbol.
  • the configuration of the clusters of deformities corresponds to the shape of the light symbol.
  • the luminaire has a first and a second light-transmitting edge surface, with respectively, a first and a second plurality of light sources being associated with the surfaces.
  • a first cluster of deformities only couples light from the first light source out of the panel, thereby forming a first light symbol
  • a second cluster of deformities only couples light from the second light source out of the panel, thereby forming a second light symbol, independently of the formation of the first light symbol.
  • the luminaire provides independent lighting and coloring possibilities of light symbols in a single-panel luminaire.
  • Light emitting diodes or "LEDs” have not been widely accepted as a general lighting source as a replacement for incandescent or fluorescent light sources because, until just recently, they were known to have a very poor luminous efficiency and were incapable of providing sufficient brightness.
  • LEDs were first commercialized in the early 1960s, they then featured a luminous efficiency on the order of 0.15 lumen ("lm") per watt (“lm/W"). Not until the development of isoelectronically doped indirect semiconductors in the mid-1970s did diodes become brighter and more varied in color.
  • Red, yellow, and green diodes so manufactured could produce a luminous efficiency in the range of 1 lm/W; single heterostructure diodes raised the efficiency to a range of 2 lm/W.
  • the recent development and plummeting costs of new semiconductor materials have made it possible to produce low cost, "high brightness” light emitting diodes, or LEDs, that provide a new alternative to conventional filament light bulbs and fluorescent tubes as a light source in ceiling light panels.
  • LED power efficiency is advancing at a rapid rate compared to conventional incandescent and fluorescent lighting. For example, Lumileds Lighting LLC, of San Jose, California produces a Luxeon TM Star line of ultra bright LEDs whose brightness exceeds previous LEDs by a factor of 5 to 10 times or even more.
  • the present invention is distinguished over the prior art in general, and these patents in particular by a flat planar light fixture formed of a translucent panel with suitable opacity for the transmission of light that is illuminated by a plurality of high brightness LEDs disposed along the edges thereof.
  • a layer of reflective material on a back surface of the panel facilitates reflection and dispersion of light that occurs within the panel through a front surface thereof.
  • the LEDs are powered by low-voltage direct current through a rectifier and can be coupled with an emergency backup battery that is maintained in a charged condition by standard current.
  • the light fixture may be operatively connected with a signal receiver that controls the light intensity and turns the LEDs on and off responsive to signals transmitted from a remote signal transmitter.
  • the LEDs may be provided in different colors to allow the user to vary the color of illumination.
  • the light fixture may also be operatively connected with an alarm system. DISCLOSURE OF THE INVENTION It is therefore an object of the present invention to provide a light fixture panel illuminated by a plurality of high brightness LEDs that is compact, durable and efficient in operation. It is another object of this invention to provide a light fixture panel illuminated by a plurality of high brightness LEDs that operates on low voltage direct current which will reduce the electrical power required to provide illumination in a home or office.
  • a further object of this invention is to provide a light fixture illuminated by a plurality of high brightness LEDs in various different colors that may be controlled to allow the user to vary the color of illumination to produce customized and dynamic lighting effects.
  • a still further object of this invention is to provide a light fixture illuminated by a plurality of high brightness LEDs that is simple in construction, inexpensive to manufacture and rugged and reliable in operation.
  • Other objects of the invention will become apparent from time to time throughout the specification and claims as hereinafter related. The above noted objects and other objects of the invention are accomplished by a flat planar light fixture formed of a translucent panel with suitable opacity for the transmission of light that is illuminated by a plurality of high brightness LEDs disposed along the edges thereof.
  • a layer of reflective material on a back surface of the panel facilitates reflection and dispersion of light that occurs within the panel through a front surface thereof.
  • the LEDs are powered by low-voltage direct current and may be coupled with an emergency backup battery that is maintained in a charged condition by household current.
  • the light fixture may be operatively connected with a signal receiver that controls the light intensity and turns the LEDs on and off responsive to signals transmitted from a remote signal transmitter.
  • the LEDs may be provided in different colors to allow the user to vary the color of illumination.
  • the light fixture may also be operatively connected with an alarm system.
  • FIG. 2A is a cross sectional view of the light fixture showing, somewhat schematically, the panel and frame with LEDs installed in lateral side edges of the panel at an angle with respect to the front surface of the panel.
  • Fig. 2B is a cross sectional view of the light fixture showing, somewhat schematically, the panel and frame with LEDs installed in lateral side edges of the panel.
  • Fig. 3 is a schematic block diagram of the power supply circuitry of the light fixture and showing, somewhat schematically a plurality of LEDs installed in a side edge of the panel.
  • the light fixture is shown in and described for purposes of example, as a ceiling fixture adapted to be fitted into or onto the ceiling, however, it should be understood that the fixture may be supported in other ways such as mounting on a wall or other suitable support.
  • the fixture 10 has a flat generally rectangular panel 11 formed of a lightweight translucent material with suitable opacity for the transmission of light, surrounded on its outer periphery by a frame 21.
  • the panel 11 is relatively thin, for example from about 3/8" to 1/2" in thickness, and in the embodiment for use as a ceiling fixture may be from about 10 inches to about 24 inches wide and about 4 feet long. They may also be provided in smaller segments or in elongate narrow strips.
  • the fixture 10 may also be sized to be retrofit into existing conventional ceiling suspended fluorescent or incandescent fixture frames.
  • the panel 11 has a front surface 11A and a back surface 11B and opposed flat peripheral side edges 11C.
  • the back surface 11B is provided with a layer of high reflectivity material 12, which may be a paint coating or sheet of material applied to the back surface to improve the efficiency of the internal reflections within the panel and facilitate uniform illumination.
  • the peripheral side edges 11C may also be provided with a layer of high reflectivity material to further improve efficiency of internal light within the panel.
  • the front surface 11A of the panel is preferably smooth and may be polished for optimal transmission of light.
  • the front or back surfaces of the panel may optionally be provided with an uneven surface finish, for example etched or sanded, to provide a diffuser for the light. Diffusing the light helps to spread the LED beams, however, diffusers attenuate the light from the source, and thus adversely affect efficiency.
  • the panel Umaterial may also contain a sufficient amount of phosphor material to facilitate radiation of the light.
  • a plurality of inwardly extending blind holes 13 are formed in the opposed peripheral side edges of the panel 11 in longitudinally spaced apart relation. The holes 13 may be disposed at an angle with respect to the front surface 11A of the panel 11 as shown in Fig. 2A, or may be disposed generally parallel to the front surface of the panel as shown in Fig. 2B.
  • a high brightness LED 14 is received in each blind hole.
  • the LEDs 14 may be secured in the holes 13, by frictional engagement or other suitable mounting means.
  • the LEDs 14 may be mounted on the opposed peripheral side edges of the panel 11 without insertion into holes by other mounting means such that, when illuminated, light therefrom is injected into the panel material from the peripheral edges and reflected internally within the panel causing the light to become diffused.
  • the number of LEDs used depends on the size of the panel, the desired brightness and the intensity of the LED used.
  • the frame 21 has a generally U-shaped transverse cross section to define a channel 21 A surrounding the opposed peripheral edges 11C of the panel 11, to accommodate the LEDs 14 whereby the LEDs may be wired together, or to accommodate one or more circuit board strips 15 on which the end terminals of the LEDs 14 may be mounted in longitudinally spaced apart relation corresponding to the hole spacing.
  • the LEDs 14 may be mounted on a printed circuit board in a conventional manner, e.g., by soldering their leads to the printed circuit board such that the LEDs are appropriately oriented to correspond to the spacing of the holes 13.
  • the printed circuit boards or strips can be retained on the panel by attaching them to its peripheral side edges, or retained in the frame by supporting or mounting them on an interior support surface in the frame.
  • the electrical terminals or leads of the LEDs 14 are electrically connected through the circuit board 15 to a low voltage direct current electrical supply such as a rectifier or LED "driver” 16, which is in turn connected with the common 120v AC household electrical source 17.
  • the LED "driver” 17 rectifies and regulates the common 120v AC current down to supply polarized constant DC electrical current to the LEDs 14, such as 12v or 24v DC.
  • LED drivers are commercially available that will fit into a standard 4" junction box.
  • a rechargeable backup battery 18 is provided in the power supply circuitry and connected with the standard 120 volt AC to be constantly charged thereby to provide uninterruptible power to the LEDs in the event of a power failure.
  • the backup battery and LED driver may be retrofitted into a conventional light fixture box, or may be located outside of the fixture.
  • the rechargeable backup battery 18 and rectifier 16 are located remote from the fixture and connected with the fixture by 12 volt DC wiring. This arrangement allows 12 volt DC wiring to be used in the building or area in which the fixtures are mounted, rather than the standard 120 volt AC light wiring system.
  • the LEDs 14 When the LEDs 14 are on, the light therefrom is injected into the panel material from the peripheral edges and reflected internally within the panel causing the light to become diffused. The light is transmitted through the panel and emitted through the front surface 11A of the panel 11 in a concentrated manner under the influence of total internal reflection.
  • a remote control signal receiver 19 is connected with the power supply circuitry and the LED driver or rectifier to control the operation of the LEDs in response to control signals transmitted by a hand-held remote control unit 20.
  • the signal receiver 19 and remote control unit 20 allow the LEDs to be turned on and off and the light intensity to be selectively controlled from a remote location.
  • the signal receiver 19 may be mounted on the frame 21, as shown in Fig. 1, or may be located outside of the fixture adjacent to the LED driver.
  • the signal receiver 19 may also be connected to control a single light fixture, or a group of light fixtures such as in a hallway.
  • the high brightness LEDs 14 may also be provided in a plurality of various different colors that may be controlled to vary the color of illumination and thereby produce customized and dynamic lighting effects.
  • the fixture 10 may also be electrically connected with an alarm system, such as a burglar alarm, smoke detector, motion sensor, etc., wherein various groups of LEDs may be switched on or off to produce a different color or hue to provide a visual alarm signal in the event of an emergency situation.
  • an alarm system such as a burglar alarm, smoke detector, motion sensor, etc.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Planar Illumination Modules (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

La présente invention concerne un dispositif d'éclairage (10) plan et plat formé d'un panneau translucide (11) dont l'opacité est appropriée à l'émission de lumière et qui est éclairé par une pluralité de diodes électroluminescentes (DEL) (14) très lumineuses disposées sur ses bords (11C). Une couche de matériau réfléchissant (12) située sur une surface arrière (11B) du panneau facilite la réflexion et la dispersion de la lumière se produisant dans le panneau par une surface avant (11A) de ce dernier. Les DEL sont alimentées par un courant continu basse tension et sont couplées à un accumulateur (18) de secours qui est maintenu à l'état chargé par le courant du système domestique. Le dispositif d'éclairage peut être couplé de manière fonctionnelle à un récepteur de signal (19) qui commande l'intensité lumineuse et qui met en service ou hors service les DEL en réponse aux signaux émis par un émetteur de signal éloigné (20). Les DEL peuvent être de couleurs différentes pour permettre à l'utilisateur de varier la couleur de l'éclairage. Le dispositif d'éclairage peut également être fonctionnellement couplé à un système d'alarme (22).
PCT/US2005/010361 2004-03-31 2005-03-29 Panneau lumineux eclaire par des diodes electroluminescentes WO2005098311A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US55784804P 2004-03-31 2004-03-31
US60/557,848 2004-03-31

Publications (2)

Publication Number Publication Date
WO2005098311A2 true WO2005098311A2 (fr) 2005-10-20
WO2005098311A3 WO2005098311A3 (fr) 2007-03-15

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Family Applications (1)

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PCT/US2005/010361 WO2005098311A2 (fr) 2004-03-31 2005-03-29 Panneau lumineux eclaire par des diodes electroluminescentes

Country Status (2)

Country Link
US (1) US7374327B2 (fr)
WO (1) WO2005098311A2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2273608A1 (es) * 2006-06-28 2007-05-01 Zydotronic S.L. Sistema de iluminacion multicolor.
WO2010051614A1 (fr) * 2008-11-10 2010-05-14 Whirlpool S.A. Système d'éclairage ambiant et procédé d'éclairage faisant appel à ce système
WO2011017455A1 (fr) * 2009-08-04 2011-02-10 Bruce Aerospace, Inc. Luminaire à diodes électroluminescentes à haute brillance
CN102313156A (zh) * 2010-07-02 2012-01-11 海洋王照明科技股份有限公司 Led平面光源

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